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We present information on age related changes of thyroid hormone levels in bonobos (N = 96) and chimpanzees (N = 100) ranging between one and 56 years of age. Fresh urine samples were used for hormone measurements with a commercial competitive total triiodothyronine (T3) ELISA. In both species, immature individuals had higher TT3 levels than adults and there was a marked decrease in TT3 levels between...
Chimpanzees are our closest living relatives and their positional repertoire likely includes elements shared with our common ancestor. Currently, limitations exist in our ability to correlate locomotor anatomy with behavioral function in the wild. Here we provide a detailed description of developmental changes in chimpanzee locomotion and posture. Fieldwork was conducted on wild chimpanzees at Ngogo,...
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